Description
Microsoft Windows NAT Helper Components (ipnathlp.dll) on Windows XP SP2, when Internet Connection Sharing is enabled, allows remote attackers to cause a denial of service (svchost.exe crash) via a malformed DNS query, which results in a null pointer dereference.
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.
Metasploit 1 module
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Microsoft Windows NAT Helper Denial of Service
auxiliary/dos/windows/nat/nat_helper
Exploit-DB 2
- Microsoft Windows - NAT Helper Components Remote Denial of Service EDB-2682 · dos · Oct 30, 2006 · verified
- Microsoft Windows - NAT Helper Components 'ipnathlp.dll' Remote Denial of Service EDB-2672 · dos · Oct 28, 2006 · verified
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
References
- 22592 third-party-advisory
- 20804 vdb-entry
- http://research.eeye.com/html/alerts/zeroday/20061028.html
- 2672 exploit
- 1017133 vdb-entry
- win-ipnathlp-dos(29917) vdb-entry
- ADV-2006-4248 vdb-entry
- 30096 vdb-entry